STATEN ISLAND, N.Y. --The borough's population stood at 472,621 as of last July, an increase of slightly less than one percent since the 2010 census, according to U.S. Census Bureau estimates released Thursday.

This represented the lowest percentage population gain in all the city's five boroughs.

Almost 3,900 new residents arrived on Staten Island between April 2010 and July 2013, the Census Bureau estimated.

In sharp contrast, Brooklyn -- NYC's most populous borough -- saw a 3.5 percent jump in residents over the same period to almost 2.6 million, the highest increase in the city.

Queens was next, with an estimated 2.9 percent population spike. The influx of almost 65,500 people put the number of residents there just shy of 2.3 million.

Manhattan's population increased by an estimated 2.5 percent, to 1.6 million.

The Bronx rate was slightly lower (2.4 percent), leaving that borough with an estimated 1.4 million residents as of last summer, the Census Bureau reported.

'MORE PEOPLE COMING TO NYC THAN LEAVING' -- STATEN ISLAND A NOTABLE EXCEPTION

Adding up the numbers, NYC's population reached an all-time record high of 8.4 million, based on the 2013 Census Bureau's estimated calculations.

"The
increase is fueled by people continuing to move to the city, a decline
in the number of people leaving the city, as well as the continued
surplus of births over deaths due to life expectancy in the city
reaching new record highs," the City Planning Department explained in a statement issued Thursday.

"The data also
show that 'net migration' to the city continues to be positive, meaning
that more people are coming to New York City than leaving it," the agency added.

Three of the city's boroughs -- Brooklyn, Manhattan, and Queens -- experienced "positive net migration" between 2010 and 2013, but Staten Island and the Bronx did not, seeing more people leaving than moving in.

The Island lost 6,370 residents who moved to other nearby counties and elsewhere in the U.S. during this period, the U.S. Census calculated.

The borough did gain gain 3,718 residents from "net international migration" from Puerto Rico and other countries, but this still left Staten Island with a total net migration negative of 2,652 people.

The Island's estimated natural population increase of 6,737 (from births measured against deaths) accounted for the estimated total population change of a positive 3,891 during 2010-2013, according to the Census Bureau.

Almost 43 percent of all New York State residents live in NYC, based on the just-released 2013 population estimates.

The city's population, overall, grew by 2.8 percent between 2010 and 2013, while the total population growth in New York State during the same period was half that -- 1.4 percent.